Update README.md

Author: ericdallo

README.md

@@ -1,7 +1,35 @@
-<img align="right"  src="https://raw.githubusercontent.com/ericdallo/spring-s3-properties-loader/images/spring-icon.png?raw=true" width="144" height="200"/>
-# Spring S3 Property Loader #
+<img align="right"  src="https://raw.githubusercontent.com/ericdallo/spring-s3-properties-loader/images/spring-icon.png?raw=true" width="120" height="120"/>
+# Spring S3 Property Loader
 
 S3 Property Loader has the aim of allowing loading of Spring property files from S3 bucket, in order to guarantee stateless machine configuration.
 
 Spring PropertyConfigurer replaces standard PropertyConfigurer to load property files from AWS S3 bucket. S3 path could be specified directly into spring beans.
 
+### Install
+Gradle:
+```groovy
+compile "com.spring.loader:s3-loader:1.0.1"
+```
+Maven:
+```xml
+<dependency>
+  <groupId>com.spring.loader</groupId>
+  <artifactId>s3-loader</artifactId>
+  <version>1.0.1</version>
+  <type>pom</type>
+</dependency>
+```
+### How to use
+
+Declare a spring bean `S3PropertyPlaceholderConfigurer` using yours AWS credencials or AWS instance profile. e.i: 
+
+```java
+@Bean
+S3PropertyPlaceholderConfigurer s3PropertyPlaceholderConfigurer(AmazonS3 s3) {
+    S3ResourceLoader s3ResourceLoader = new S3ResourceLoader(s3);
+    S3PropertyPlaceholderConfigurer s3PropertyPlaceholderConfigurer = new S3PropertyPlaceholderConfigurer(s3ResourceLoader);
+    s3PropertyPlaceholderConfigurer.setS3Locations(new String[]{"s3://my-bucket/my-folder/my-properties.properties"});
+
+    return s3PropertyPlaceholderConfigurer;
+}
+```